GB/T 21972.2-2012
起重及冶金用变频调速三相异步电动机技术条件.第2部分:YZP系列起重及冶金用变频调速三相异步电动机(轴流风机冷却)
Specification for variable-frequency adjustable-speed three-phase induction motors for crane and metallurgical applications.Part 2:YZP series variable-frequency adjustable-speed three-phase induction motors for crane and metallurgical applications(cooled
GBT21972.2-2012, GB21972.2-2012